diff --git a/FORECAST-WEATHER-API-BLUEPRINT.apib b/FORECAST-WEATHER-API-BLUEPRINT.apib
index 55ab211..1a28979 100644
--- a/FORECAST-WEATHER-API-BLUEPRINT.apib
+++ b/FORECAST-WEATHER-API-BLUEPRINT.apib
@@ -75,6 +75,22 @@ For multiple locations, its recommended to just use the point compression.
 The forecasts in the response collection are "flat" to allow easy streaming and filtering on client side.
 The forecasts in the response are ordered ascending by field 'validFrom'.
 
+It is important to use encoded timestamps when doing the requests to Point Forecast Service by for example POSTMAN or browser.
+
+To encode properly the timestamp:
+
+1. Go to https://www.urlencoder.org/ site.
+2. Paste desired timestamp.
+3. Without changing any parameters click "> ENCODE <" button.
+4. Use generated encoded timestamp in the url.
+
+Example:
+URL before encoding (not working):
+https://point-forecast.weather.mg/search?locatedAt=-2.44198,50.54282&validUntil=2019-05-26T00:00:00+02:00&timeZone=Europe/London&fields=maxAirTemperatureInFahrenheit,airTemperatureNearGroundInCelsius,relativeGlobalRadiationInPercent,airTemperatureInCelsius,windSpeedInKnots,windSpeedInKilometerPerHour,weatherSymbolCode,airTemperatureInKelvin,sunshineDurationInMinutes,stationLocation&validPeriod=PT1H,PT6H,PT24H
+
+URL after encoding (working):
+https://point-forecast.weather.mg/search?locatedAt=-2.44198,50.54282&validUntil=2019-05-26T00%3A00%3A00%2B02%3A00&timeZone=Europe/London&fields=maxAirTemperatureInFahrenheit,airTemperatureNearGroundInCelsius,relativeGlobalRadiationInPercent,airTemperatureInCelsius,windSpeedInKnots,windSpeedInKilometerPerHour,weatherSymbolCode,airTemperatureInKelvin,sunshineDurationInMinutes,stationLocation&validPeriod=PT1H,PT6H,PT24H
+
 *Fields mapping*
 
 Common names of filed which can be included in all periods: locatedAt,meteoGroupStationId,meteoGroupStationName,stationLocation,stationTimeZoneName,validFrom,validUntil,validPeriod,issuedAt
diff --git a/OBSERVATION-WEATHER-API-BLUEPRINT.apib b/OBSERVATION-WEATHER-API-BLUEPRINT.apib
index 75124bd..441f2b8 100644
--- a/OBSERVATION-WEATHER-API-BLUEPRINT.apib
+++ b/OBSERVATION-WEATHER-API-BLUEPRINT.apib
@@ -72,6 +72,22 @@ code  description                           comment
 The 'shipCourseText' returns one of the following values: "not moving", "NE", "E", "SE", "S", "SW", "W", "NW", "N", "unknown".
 The 'shipSpeedRangeInKnots' returns one of the following values: "0", "1-5", "6-10", "11-15", "16-20", "21-25", "26-30", "31-35", "36-40", ">40", "unknown".
 
+It is important to use encoded timestamps when doing the requests to Point Observation Service by for example POSTMAN or browser.
+
+To encode properly the timestamp:
+
+1. Go to https://www.urlencoder.org/ site.
+2. Paste desired timestamp.
+3. Without changing any parameters click "> ENCODE <" button.
+4. Use generated encoded timestamp in the url.
+
+Example:
+URL before encoding (not working):
+https://point-observation.weather.mg/observation/hourly?meteoGroupStationIds=10385&observedPeriod=PT0S&fields=meteoGroupStationId,meteoGroupStationName,airTemperatureInCelsius&observedFrom=2019-05-20T09:00:00+02:00&observedUntil=2019-05-21T09:00:00+02:00
+
+URL after encoding (working):
+https://point-observation.weather.mg/observation/hourly?meteoGroupStationIds=10385&observedPeriod=PT0S&fields=meteoGroupStationId,meteoGroupStationName,airTemperatureInCelsius&observedFrom=2019-05-20T09%3A00%3A00%2B02%3A00&observedUntil=2019-05-21T09%3A00%3A00%2B02%3A00
+
 *Gap filling*
 
 GapFilling allows to gap fill missing observations with forecast data from Point Forecast service for following parameters: