There is a data base for the observation time
('info' data: Appendix A.6).
For example, to see the observation time of the schedules
on 1998-7-25 UT of 17GHz steady-mode (1sec integration) data,
IDL> norh_pr_info,'1998-07-25' <CR>
or for data from 1998-7-25 to 1998-7-28,
IDL> st_time='1998-07-25' <CR>
IDL> ed_time='1998-07-28' <CR>
IDL> norh_pr_info,st_time,ed_time <CR>
For 17GHz event-mode (50/100 msec integration) data,
IDL> norh_pr_info,st_time,ed_time,/event <CR>
For 34GHz event-mode data,
IDL> norh_pr_info,st_time,ed_time,/event,freq=34 <CR>
Then you will get
Start End Schedule StFr EdFr
(UT) (UT)
1998-06-30 22:45:22 06:44:56 980701 1 28775
1998-07-01 22:45:24 06:44:57 980702 1 28774
One line is for one NoRH schedule (Appendix A.2).
From left,
start time,end time,
schedule ID, start frame number, end frame number.
If you see the observation logs ('lob' data: Appendix A.11),
IDL> norh_pr_info,st_time,ed_time,/log <CR>
You will get
### 92/07/24 Data between 08:03 and 08:35 were lost. ### 92/07/31 *Phase tracking software bug was fixed. Phase jumps which were found every 250 sec. will disappear.