Welch Allyn Connectivity Server - Programmers guide - Manual (Page 17)

Programmer’s Guide HL7 standard protocols 13
Time/date in HL7 segments
When importing vital-sign data into an electronic patient-charting application, use the
timestamp associated with the OBR for the vital-signs record in the chart.
Format
Date and time in the HL7 segments are represented in this format:
YYYYMMDDHHMMSS.mmm±TZTZ
• Displayed time is local.
• Hours are in the range 0-23.
• Seconds (SS) are followed by the following:
3-digit millisecond value (which appears as 000 if no other value is provided)
+ or a -
4-digit time-zone code
Example of HL7 time/date format:
26 January 2009, at 0.193 seconds past 12:22:02 PM, Pacific time (8 hours behind GMT):
20090126122202.193-0800