TrueTime Helps Global Atmospherics Measure Lightning Strikes
Time Server Provides Accurate Time Stamps of Lightning Strikes to the Millisecond

SANTA ROSA, Calif. - May 29, 2001 - TrueTime, Inc. (NASDAQ: TRUE), a leading provider of precision time and frequency products, today announced that its NTS-200 Network Time Server plays an important role in the precise timing of lightning strikes across the nation. TrueTime's customer, Global Atmospherics, which owns and operates the U.S. National Lightning Detection Network® (NLDN®), depends on TrueTime's Network Time Server to provide millisecond timing for its lightning detection systems.

Meteorological agencies, airports, and power utilities worldwide depend on Global Atmospherics' lightning location systems to complete their weather data. Lightning is a leading indicator of severe weather used in storm warnings issued to the public, pilots, ground and maintenance crews. Utilities use early storm warnings to pre-position crews and repair equipment for dispatch to vulnerable transmission and distribution lines. After storms, historic lightning data is used to correlate property damage and power outages. This post-storm analysis is especially important to power utilities to verify lightning faults for better design and engineering decisions, to prioritize upgrades, and to improve power delivery performance.

"Global Atmospherics' high quality lightning detection networks run day and night to map when and where lightning strikes. For every lightning strike, six or seven of our remote sensors must see the lightning to report the strike information to the central analyzer. TrueTime's NTS-200 is crucial in this process for accurate communications and time-delay calculations between the sensors and the analyzer. Timing is the number one factor in making our systems accurate and reliable," said Jeff Tuel, vice president of marketing and international sales.

"Our work with Global Atmospherics is a prime example of the importance of precise timing. We are very pleased that our NTS 200 Network Time Server can meet the needs of Global Atmospherics' very sophisticated lightning detection systems," said Scott Davis, TrueTime's director of sales.

The NTS-200 is a member of TrueTime's robust family of Network Time Servers.

About Global Atmospherics
Global Atmospherics, based in Tucson, Arizona, is a world leader in the design and manufacture of lightning detection and location equipment and services. The company's unique expertise and qualified personnel serve customers in over 40 countries with principal applications in meteorology, electric power, forestry, aviation, telecommunications, insurance and applied research.

About TrueTime
TrueTime, Inc. designs, develops, manufactures and markets precision time and frequency products that are essential components used by many technology based markets to provide greater accuracy and resolution than can be obtained from conventional timing devices. TrueTime, Inc. is traded on the NASDAQ National Market System under the symbol "TRUE." TrueTime's web site is http://www.truetime.com.

This press release includes "forward-looking statements" within the meaning of Section 27A of the Securities Act of 1933 and Section 21 E of the Securities Exchange Act of 1934. All statements other than statements of historical fact included herein, including statements regarding potential future products and markets, the Company's future financial position, business strategy and other plans and objectives for future operations, are forward-looking statements. Additional important factors that could cause actual results to differ materially from the Company's expectations are disclosed in the Company's Form 10-K for the year ended September 30, 2000 and in quarterly reports in form 10-Q on file with the SEC, under the heading "Risk Factors" and elsewhere. In particular, without exclusion of other risks, the success of our business involves the risks of successful strategic agreements and entrance into new market segments, technological changes, strong competition and dependence on component suppliers, government spending and the general growth and success of the industries and customers we serve. Further, all written and verbal forward-looking statements attributable to the Company or persons acting on its behalf are expressly qualified in their entirety by such factors.