API Laps method, first lap lap_duration null

[gtoniutti]

Hello,
I am trying to calculate the duration of one GP for each driver through the API Laps method summing up the "lap_duration" for each lap. However, I noticed that the "lap_duration" (and also the "duration_sector_1") is always null. Is this a bug? How can I reach the scope otherwise?
Here below an example:
{"meeting_key":1230,"session_key":9480,"driver_number":16,"i1_speed":280,"i2_speed":293,"st_speed":307,"date_start":null,"lap_duration":null,"is_pit_out_lap":false,"duration_sector_1":null,"duration_sector_2":29.838,"duration_sector_3":29.664,"segments_sector_1":[2048,2049,2049,2049,2051,2049,2051,2049,2049],"segments_sector_2":[2049,2049,2049,2049,2049,2049,2049],"segments_sector_3":[2051,2048,2048,2049,2048,2048,2048,2048,2049],"lap_number":1}

Many thanks in advance for any help.

[br-g]

Hello,

The absence of lap times for the first lap of each race is by design. This occurs because races typically begin from a position already within the first lap, past the starting line. Consequently, attempting to calculate the duration for this initial lap would not yield meaningful results.

Moving forward, it's possible to consider the first lap's duration as the time elapsed from the race's start until the first crossing of the starting line. However, determining the precise start time of the race remains a challenge, as I currently lack this information in the available data.

[gtoniutti]

Thank you very much! Please provide updates once it will be possible through Open F1 to calculate the official time (e.g. Verstappen GP of Saudi Arabia 1:20:43.273). Again many thanks